package com.lianyin.lambda;

@FunctionalInterface
public interface ChengTwo {
	int cheng(int i);

	default int add(int a, int b) {
		return a + b;
	};
}

@FunctionalInterface
interface ChengThree {
	int cheng(int i);

	default int add(int a, int b) {
		return a + b;
	};
}

@FunctionalInterface
interface ChengFour extends ChengTwo, ChengThree {

	@Override
	default int add(int a, int b) {
		return ChengThree.super.add(a, b);
	}


}
